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Author Topic: Dumb question, air filters+rain  (Read 1173 times)

Offline TheCoffeeGuy

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Re: Dumb question, air filters+rain
« Reply #10 on: Apr 16, 2018, 19:40:31 »
Use a front fender and dont ride in the rain.
www.thecoffeeguy.ca Not your ordinary Blog site.

1968 Harley Aermacchi ML 125 Rapido, restored
1972 Honda Cl 450 engine rebuild, a day rider soon, now sold
1980 Suzuki GS850GL Street Brat  My other day bike
2000 Harley 1200 Sport S My day bike
1982 Honda CB650 Chopper light

Offline datadavid

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Re: Dumb question, air filters+rain
« Reply #11 on: Apr 17, 2018, 02:42:59 »
Thanks for the replies, I mean that I see millions of modified bikes with this kind of filters and no fenders. I don't intend to ride when it's raining but specially in Finland where i come from, you never know when it's raining or snowing, so, for those occasions I am looking for a solution. This rain sock will definitely be an addition to my riding gear, also for myself if I can find a bag that's big enough.
What comes to fenders, I have a small fender to the front end but I guess that's just small enough just to improve(?) the looks.. For the rear I think a plate can be added to the frame behind the air filters. The decent airbox is one good option, but it has to be self made as I haven't found an aftermarket solution for that. It's not a problem but timewise this summer will go with this setup.. Do you know if there are some aftermarket boxes?
Guess what? Those millions of bikes dont work in the rain!

Offline TheCoffeeGuy

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Re: Dumb question, air filters+rain
« Reply #12 on: Apr 18, 2018, 14:47:23 »
The fender is not for the rain or the looks.  All these older bikes need the cross member that the fender attaches to to stabilize the forks which twist and torque under pressure and the stress of driving.  Its strictly a safety thing.   

You see many pictures of bikes on various sites.  They are not all drivers.  As in they do not all have a license to ride on the road.  Many are just show girls which never actually go out for the day.  Many do not have legal lights or other attributes.  For example many do not have a chain guard, This in itself is illegal in many jurisdictions from a safety perspective.
www.thecoffeeguy.ca Not your ordinary Blog site.

1968 Harley Aermacchi ML 125 Rapido, restored
1972 Honda Cl 450 engine rebuild, a day rider soon, now sold
1980 Suzuki GS850GL Street Brat  My other day bike
2000 Harley 1200 Sport S My day bike
1982 Honda CB650 Chopper light

Offline Tim

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Re: Dumb question, air filters+rain
« Reply #13 on: Apr 18, 2018, 15:47:37 »
Yes - the front fender is important for locking the fork lowers together, so they move up and down at the same time.  Otherwise thereís tons of force applied at the axle, twisting, changed geometry etc.

The front fenders usually have a thick metal bracket that is the brace you need, at minimum.  Aftermarket fork braces are heavier, doing a better job.  I ran without a front fender but had a proper fork brace.

No rear inner fender either.  And I didnít ride in the rain (not often).
"Quality . . . you know what it is, yet you don't know what it is. But that's self-contradictory. But some things are better than others, that is, they have more quality. But when you try to say what the quality is, apart from the things that have it, it all goes poof! There's nothing to talk about. But if you can't say what Quality is, how do you know what it is, or how do you know that it even exists? If no one knows what it is, then for all practical purposes it doesn't exist at all. But for all practical purposes it really does exist."

Offline Alex jb

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Dumb question, air filters+rain
« Reply #14 on: Apr 18, 2018, 18:05:52 »
I had a non OEM fibreglass fender on my CD when I got it, noticeably wishywashy.
Made my own 6mm alloy plate fork brace/bracket, down sized the fender a bit and fitted it closer to the tyre.
Much more positive front end feel now and keeps more water off despite being smaller.



I have the same problem at the back though


Nice bike, getting out and enjoying it even if it rains on the way home is what itís all about.

Looks like your number plate will hit the tyre way before the suspension bottoms out though.

Sent from my iPhone using Tapatalk
« Last Edit: Apr 18, 2018, 18:11:03 by Alex jb »

Re: Dumb question, air filters+rain
« Reply #15 on: Apr 19, 2018, 18:25:57 »
The fender is not for the rain or the looks.  All these older bikes need the cross member that the fender attaches to to stabilize the forks which twist and torque under pressure and the stress of driving.  Its strictly a safety thing.   

The fender is for the rain (and rocks, and debris, and whatever). Most fenders also do have brace built in, but if you only want the brace effect the other comments work. Eliminate the fender but put in brace, and live with rain/rocks/debris/blood from roadkill, etc.

And I'll second the comments about pods on CV carbs -- they don't work that well unless you really know what you're doing.

A lof of folks are concerned with looks over performance, but the only people who fall for that are people who don't know any better. People who know how bikes work just shake their heads.
« Last Edit: Apr 19, 2018, 18:29:11 by carnivorous chicken »
"Remember when Goldwings were sexy? Me neither" -- Comet Tavern bathroom, Seattle.

Offline JSJamboree

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Re: Dumb question, air filters+rain
« Reply #16 on: Apr 19, 2018, 18:59:22 »
Let me not continue to pile up on everyone else throwing poo on you. 

Throw a plate in there to act as a fender, it looks like with your frame you could still add something similar below your tubes and not hit on the pods.  Sure its not see through, but its still really clean looking and it'll protect your filters.


Offline arcticxs

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Re: Dumb question, air filters+rain
« Reply #17 on: Apr 27, 2018, 15:32:22 »
On my RD350, I removed the stock air filter box, but kept the stock air filter connector, often called "Y-boot" since it is Y-shaped. And connected a large K&N where the air box was connected. This puts the (single) K&N in a vertical position, a little more protected than your individual filters. In addition, I use a K&N "Drycharger". This is a polyester sock that fits over the K&N filter, and repels most of the water. So far this has worked great.
It is hard to see if your filters are genuine K&N, or some kind of copies. In any case, they will most likely hurt performance.  You should look into having at least 50 mm of tubing or velocity stack between carbs and filters, maybe as much as 120 mm. This may not look "cool" but would help performance. Also, larger filters could be an improvement, maybe try UNI foam filters instead of K&N, as many believe they are better in the rain and also help you avoid some undesirable effects from the "end plate" in the filters you have. This has been a frequent topic on www.xs650.com.

Offline alzcbz

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Re: Dumb question, air filters+rain
« Reply #18 on: Apr 27, 2018, 22:31:27 »
If you're set on those pod filters, get yourself some "Outerwears, Pre-Filters".
Like the K&N Dry Chargers mentioned above.
Used them religiously on my K&Ns for my TRX250R.
73 CL350 Hardtail somethin turned into cafť
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Offline pidjones

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Re: Dumb question, air filters+rain
« Reply #19 on: Apr 28, 2018, 10:13:13 »
My first bike, back in the early '70s, was a 650 Triumph TR6C "chopper" with hard tail and 12" over springer front end. Besides the crap handling and gorping up of what could have been a great bike, it had no front fender. I rode it ONCE on a wet road - rain had stopped. The front tire pumped water up UNDER my face shield and into my face/up my nose. I traded it for an RD250 the next week! The GL100 that I'm working on will prmarily be for showing at small town shows in my region - but it WILL have a front, rear, and inner rear fender.
"Love 'em all.... Let God sort 'em out!"